We analyze the performance of a force detector based on balanced measurements with a Mach-Zehnder interferometer incorporating a standard optomechanical cavity. The system is driven by a coherent superposition of coherent light and squeezed vacuum field, providing quantum correlation along with optical coherence in order to enhance the measurement sensitivity beyond the standard quantum limit. We analytically find the optimal measurement strength, squeezing direction, and squeezing strength at which the symmetrized power spectral density for the measurement noise is minimized below the standard quantum limit. This force detection scheme based on a balanced Mach-Zehnder interferometer provides better sensitivity compared to that based on balanced homodyne detection with a local oscillator in the low frequency regime.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7567122 | PMC |
| http://dx.doi.org/10.1038/s41598-020-74629-1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Low-Coherence Integrated Optical Interferometer for Fibre Optic Sensors.
Sensors (Basel)
December 2024
Research and Educational Center for Physics of Solid State Nanostructures of Lobachevsky State University of Nizhniy Novgorod, 603950 Nizhniy Novgorod, Russia.
This paper proposes and implements a novel scheme for recording signals from fibre optic sensors based on tandem low-coherence interferometry with an integrated optical reference interferometer. The circuit allows precision control of the phase shift. Additionally, the paper illustrates the potential for detecting vibration and object deformation using fibre optic Fabry-Perot sensors connected to the registration system.
View Article and Find Full Text PDFIntelligent Pattern Recognition Using Distributed Fiber Optic Sensors for Smart Environment.
Sensors (Basel)
December 2024
Centre for Photonic Devices and Sensors, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK.
Distributed fiber optic sensors (DFOSs) have become increasingly popular for intrusion detection, particularly in outdoor and restricted zones. Enhancing DFOS performance through advanced signal processing and deep learning techniques is crucial. While effective, conventional neural networks often involve high complexity and significant computational demands.
View Article and Find Full Text PDFA Novel MZI Fiber Sensor with Enhanced Curvature and Strain Sensitivity Based on Four-Core Fiber.
Micromachines (Basel)
November 2024
School of Electronic Science and Engineering, Hunan Institute of Information Technology, Changsha 410151, China.
We present a high-sensitivity curvature and strain Mach-Zehnder interferometer (MZI) fiber sensor based on a configuration of no-core fiber (NCF) and four-core fiber (FCF). We used an optical fiber fusion splicer to directly splice a segment of FCF between two segments of NCF, with both the FCF and NCF made of SiO, where the FCF exhibits multi-path interference characteristics that allow for higher sensitivity. The NCF, with its self-focusing property, excites higher-order modes, which split and transmit it into the four cores of the FCF.
View Article and Find Full Text PDFMachine learning with knowledge constraints for design optimization of microring resonators as a quantum light source.
Sci Rep
January 2025
Departemant of Physics and Energy Engineering, Amirkabir University of Technology, Tehran, Iran.
With careful design and integration, microring resonators can serve as a promising foundation for developing compact and scalable sources of non-classical light for quantum information processing. However, the current design flow is hindered by computational challenges and a complex, high-dimensional parameter space with interdependent variables. In this work, we present a knowledge-integrated machine learning framework based on Bayesian Optimization for designing squeezed light sources using microring resonators.
View Article and Find Full Text PDFArticle Synopsis
- The proposed hybrid photonic platform combines chalcogenide glass (GeSbSe) with lithium niobate on insulator (LNOI) to enhance performance and compactness for integrated photonic systems.
- Key components such as grating couplers, micro-ring resonators, multimode interference couplers, and Mach-Zehnder interferometers are designed and fabricated, achieving high quality factors and low propagation losses.
- This platform's unique optical properties allow for scalable, low-loss integrated photonic circuits, making it suitable for applications in high-speed optical communications and signal processing.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!